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Finding the Fourth Proportional to 310,915.80, 466,719.30 and 192,720.60

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Solution

The fourth proportional to 310,915.80, 466,719.30 and 192,720.60 is: 289,295.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,915.80 : 466,719.30 = 192,720.60 : x
  2. Step 2: Convert to fraction form
    310,915.80/466,719.30 = 192,720.60/x
  3. Step 3: Cross multiply
    310,915.80x = 466,719.30 × 192,720.60
  4. Step 4: Simplify right side
    310,915.80x = 89,946,423,527.58
  5. Step 5: Solve for x
    x = 89,946,423,527.58/310,915.80
  6. Step 6: Final answer
    x = 289,295.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.